10.0

really awful
Crashes / Fires:
7 / 24
Injuries / Deaths:
8 / 0
Average Mileage:
53,925 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2014 Kia Optima engine problems

engine problem

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2014 Kia Optima Owner Comments (Page 1 of 13)

problem #248

Nov 192024

Optima

  • miles

A D V E R T I S E M E N T S

Hit dig mark in road caused by a plow about a half inch to a 1 inch deep by 5 to 7 inches wide while driving 15 mph down the road into work on November 19,2024 around 1:03/1:10 pm next thing I know I am upside down in my car in a ditch about four to five feet wide by 3-4 feet deep

- Utica , NY, USA

problem #247

Oct 202024

Optima

  • miles
Upon an engine light appearing I immediately turned the car around, and parked it at my fiancé's house. I had called kia and it was a little bit until I could take my car In. I had driven it over there which did ride a little rough. Informing kia of my issue they inspected it. I was told the second cylinder had melted which was caused by a spark plug. I do not understand how this happened, Kia said I am responsible for this and that they will not cover any repairs. As a result my car is junk and I am now left without a vehicle. I believed that it was caused due to the Theta II Class Action law suit as the only possibility for this happening is due to the fact that the car consumes large amounts of oil and constantly needs replenished. Which I believe is a direct cause, and high oil consumption is apart of the defect within the "Theta II Class Action." However they denied my claim.

- Altoona, PA, USA

problem #246

Aug 192024

Optima

  • miles
Complaint Summary: I am the current owner of a 2014 Kia Optima, which is affected by recall 23V652 related to the Hydraulic Electronic Control Unit (HECU). The vehicle was imported to the UAE, and the recall was not addressed by the previous owner. As a result, I am now facing significant safety issues. Since taking ownership, I have encountered multiple engine problems, including sudden power loss, severe vibrations, and abnormal behavior from the throttle. These symptoms align with the issues outlined in the recall notice, indicating that the vehicle may pose a safety risk to me and other road users. Despite my efforts to diagnose the problems, I have already incurred costs exceeding 13 AED on various repairs and diagnostic services, all while being unaware of the existing recall. It was only recently that I discovered the recall information online, which has heightened my concern regarding the safety of my vehicle and the potential for further complications. Given these circumstances, I am requesting assistance from the NHTSA in resolving this recall issue and guidance on how to proceed with the necessary repairs while the vehicle is registered under my name in the UAE. It is crucial for me to ensure the safety of my vehicle for my own protection and for the safety of others on the road. I appreciate your attention to this urgent matter and look forward to any support you can provide. Please let me know if further information or documentation is needed Thanks alot

- Al-Nhada, GA, USA

problem #245

Sep 272024

Optima

  • 138,000 miles

A D V E R T I S E M E N T S

The contact owns a 2014 Kia Optima. The contact stated while driving 35 MPH, there was an abnormal knocking sound coming from the engine, and the vehicle suddenly went into LIMP mode. The contact was able to pull to the side of the road. The contact then drove to the residence. The vehicle was taken to the dealer, where it was diagnosed that the engine had failed and needed to be replaced. The dealer informed the contact that an unknown software update regarding the engine knocking was previously performed on the vehicle. The dealer informed the contact that the vehicle could not be covered due to the rebuilt title. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 138,000.

- Everett, WA, USA

problem #244

Jul 012023

Optima

  • 190,000 miles
The contact owns a 2014 Kia Optima. The contact stated while driving approximately 35 MPH, a ticking sound and smoke was coming from under the hood of the vehicle. The vehicle was taken to the local dealer who diagnosed that the engine was faulty and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 190,000.

- Memphis, TN, USA

problem #243

Aug 302024

Optima

  • miles
Engine seized and failed whilst traveling 70 MPH down I-10

- Jacksonville Beach, FL, USA

problem #242

Aug 282024

Optima

  • miles

A D V E R T I S E M E N T S

Oil consumption issues. Was informed when check engine light appeared. Oil light also appeared. Over 3qts consumed in 20 days. Car shut off while driving. Engine noisy and shaky.

- Spartanburg, SC, USA

problem #241

Aug 282024

Optima

  • miles
Motor seized

- Craborchard, KY, USA

problem #240

Jul 252024

Optima

  • miles
My engine locked up while driving down the interstate. I was almost hit twice because I was in the middle lane trying to get over and it was slowly giving out. I was able to barely make it to the side of the road and cut my car completely off. Once the car was off it would not crank back up. I had it towed to a local shop. He called me the next day to inform me my engine locked up but that I had a recall on my engine for this exact issue but I would have to take it to the local Kia. BEFORE I even had it towed there I called and spoke with Kia about my recalls. They stated they were still covered and I had an extended warranty on the engine recall. Kia gets the car.. a week later they call me to tell me it is NOT the engine and only the starter! YAY! Right? Wrong, another week passes and they now call to tell me they replaced the starter and now it is my engine that is the concern, it is completely locked up and the recall will not cover it. I called the local shop back and talked to the guy there that said it should 100% be covered and he did not see an issue with my starter when he looked at it 2 days before it was towed to Kia from his shop. I would not have put a starter on the car if they would have told me there could still be an issue with the engine. They actually stated it was not the engine in the call that I approved the starter to be replaced in. Now they are wanting to charger me for the engine and the starter which was put on my car under false pretenses. They have fully taking advantage of me and that I do not know much about cars but lucky I had someone else look at it that does know a lot about cars before taking it to Kia. Otherwise I wouldn't have known they were trying to scam me. It is awful!

- Millbrook, AL, USA

problem #239

Jul 232024

Optima

  • 217,581 miles
The contact owns a 2014 Kia Optima. The contact stated while driving at approximately 35 MPH, the vehicle stalled and restarted. The check engine warning light was blinking. The vehicle was taken to an independent mechanic, who determined that the failure was due to DTC Code: P0326 Knock Sensor (1 Circuit Range Performance Bank 1). The vehicle was towed to the local dealer, who informed the contact that there was no recall coverage for the failure. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 217,581.

- Dallas, GA, USA

problem #238

Jun 272024

Optima

  • miles

A D V E R T I S E M E N T S

Engine died after knocking and shutting off in the middle of tragic. Engine will not even make a sound now. Spoke to the dealership ans they refused to repair my car bc 1) I stopped going to the dealership for maintenance back in 2016 and 2) I have not completed any of the recalls.

- Newnan , GA, USA

problem #237

May 022024

Optima

  • miles
My son and his pregnant fiancé were traveling on [XXX] West bound Thursday [XXX]. They just got out of a construction zone near Rolla MO. At mile marker [XXX] the engine shut down with no warning at 60 mph and all the lights on the dash came on. He had a hard time controlling the car due to the steering being very tight and the brakes were manual. They got a tow to a safe place. I drove 5 hours to meet them and used a scanner to see what codes the car had. Zero codes showed up on my scanner. The engine immobilizer was engaged. We could not get the car started so I rented a U-Haul and car dolly and brought the car back to Indiana to the Avon IN Andy Mohr Kia dealer where we bought it. It was scheduled to be seen Tues [XXX] at [XXX]. I did not hear from them, so I called at 2:30. They informed me an engine was ordered for the vehicle. The Knock sensor detected a bearing knock and shut the car down at high speed on an interstate. The car has no outstanding recalls. I asked about the Knock sensor recall for Kia and ask why the car did not go into limp mod so they could make it safely off the interstate. No response from the dealer. This is a terrible design to have the car shut down at high speeds on an interstate. This could be deadly. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Plainfield, IN, USA

problem #236

Apr 142024

Optima

  • 140,058 miles
Car caught fire, parked in driveway, partially damaged the house.

- Tomball , TX, USA

problem #235

Apr 202024

Optima

  • miles
My Kia motor was ordered Kia gave me a hard time to rent me a car. I went 2 months with NO Transportation. Finally I got my car back and every 3 weeks different lights are coming on. Seat belt is now own O2 sensors had to be changed Now Cadillac Converter Light is on. I didn't know that getting a new motor I would have to keep spending money that I don't have. Kia should be responsible for this it shouldn't be my fault that I'm being punished for a Bad MOTOR.

- Houston, TX, USA

problem #234

Mar 012024

Optima

  • 108,000 miles
The contact owns a 2014 Kia Optima. The contact stated that while driving at approximately 55 MPH, the check engine warning light illuminated. The vehicle began to make abnormally loud sounds prior to pulling over to the side of the roadway, where the vehicle then stalled. The vehicle was towed to the local dealer. The vehicle was diagnosed with engine failure. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure mileage was approximately 108,000. The VIN was unavailable.

- Wichita, KS, USA

problem #233

Mar 152024

Optima

  • 0 miles
The contact owned a 2014 Kia Optima. The contact stated that while the vehicle was parked in the garage, the vehicle had begun to burn. The fire department was called and the vehicle fire was controlled using water to extinguish the flames. The contact stated that the fire department filed a report. The contact stated that the vehicle was towed to an impound lot and had not been examined by a dealer or insurance adjuster. The manufacturer was informed of the failure. The contact was aware of one recall associated with the VIN, NHTSA Campaign Number: 21V331000 (Service Brakes, Hydraulic), however there were a total of three recalls - NHTSA Campaign Number: 18V907000 (Fuel System, Gasoline, Engine), and NHTSA Campaign Number: 20V100000 (Fuel System, Gasoline). The contact stated that she was not aware of the other two recalls. The failure mileage was unknown.

- St. Petersburg, FL, USA

problem #232

Feb 092024

Optima

  • miles
Car started to leak out the fuel pumps pressure system started to leak gas

- Phoenix, AZ, USA

problem #231

Jan 262024

Optima

  • miles
The car is available for inspection upon request, but I plan to finally get rid of it soon. I worry greatly about the next driver that ends up with this car. While driving, a message pops up on the dashboard that says "Check Hybrid system. Stop vehicle and turn off engine". I've learned that I have about 15 to 30 seconds to find a safe place to pull over or the car will shut off on it's own. This has happened on the freeway at 70mph and it's happened at 20mph while driving through my neighborhood. I bought the car used in 2017 and this would happen once every six months or so. In the past couple of years it's gotten more frequent. This car is going to get me or someone else seriously injured or killed. I'm always on edge that this will happen while I'm on the freeway in an area without a shoulder. Then I'll just be sitting immobile on the highway, trying to get the car to start back up and I'll get rear-ended by an unobservant driver at 65mph. I've taken the car to a Kia service department twice. The first time they couldn't reproduce the issue and told me to bring it back when it happens again. I took it in for a second time a couple years later and they told me it was the high voltage fuse. They kept my car for a month, gave me the runaround and never replaced the high voltage fuse. After doing some research online, I read that other Optima Hybrid drivers were told to change their high voltage fuse from 125A to 150A. I performed this replacement myself and I still experience the issue. There were no other warnings prior, just the "Check Hybrid system" message before the car shuts off.

- San Antonio, TX, USA

problem #230

Jan 232024

Optima

  • 167,000 miles
The contact owned a 2014 Kia Optima. The contact stated that while driving at an undisclosed speed, there was a burning fume in the interior of the vehicle. The contact parked the vehicle and the flames were coming from under the hood. The contact safely exited the vehicle. The fire department and the police were on the scene. The fire department extinguished the fire. A fire report was filed. No police report was filed. There were no injuries sustained. The contact stated that the vehicle was scheduled to be towed to a local tow yard. The contact stated that the vehicle had been serviced for an oil change one week before the failure occurred The manufacturer was not made aware of the failure. The failure mileage was approximately 167,000.

- Lafayette, LA, USA

problem #229

Jul 042023

Optima

  • miles
starter smoking cut off on me have to have it towd gas leak smell of gas

- Belton, TX, USA

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